Manuel noticed that his cellphone bill reflected a monthly fee of $40 as well as a charge for $0.05 per minute on the phone.
Manuel lost his August phone bill, but remembers that he paid
$48 total for the month. How many minutes did he spend on the
phone in August? Fill in the blank with a number only.

He spent on 16 minutes

Step-by-step explanation:

Given

per minute

Required

Determine the number of minutes

Let the number of minutes be n

If 1 minute costs $0.5

n minutes would cost $0.5n

The relationship between the given parameters is

Substitute values for each of the above

Solve for 0.5n

Solve for n

He spent on 16 minutes

-4

step-by-step explanation:

(-4+8)=-(4-8)=-8+4=-4